Implementation of wireless LAN baseband processor based on space-frequency OFDM transmit diversity scheme

Yunho Jung, Seungpyo Noh, Hongil Yoon, Jaeseok Kim

Research output: Contribution to journalArticle

3 Citations (Scopus)

Abstract

In this paper, we propose an efficient symbol detection algorithm for space-frequency OFDM (SF-OFDM) transmit diversity scheme and present the implementation results of the SF-OFDM wireless LAN (WLAN) baseband processor with the proposed algorithm. When the number of sub-carriers in SF-OFDM scheme is small, the interference between adjacent sub-carriers is generated. The proposed algorithm eliminates this interference in a parallel manner and obtains a considerable performance improvement over the conventional detection algorithm. The bit error rate (BER) performance of the proposed detection algorithm is evaluated by the simulation. In the case of 2 transmit and 2 receive antennas, at BER=10-4 the proposed algorithm obtains about 3 dB gain over the conventional detection algorithm. The packet error rate (PER), link throughput, and coverage performance of the SF-OFDM WLAN with the proposed detection algorithm are also estimated. For the target throughput at 80% of the peak data rate, the SF-OFDM WLAN achieves the average SNR gain of about 5.95 dB and the average coverage gain of 3.98 meter. The SF-OFDM WLAN baseband processor with the proposed algorithm was designed in a hardware description language and synthesized to gate-level circuits using 0.18μm 1.8V CMOS standard cell library. With the division-free architecture, the total logic gate count for the processor is 945K. The real-time operation is verified and evaluated using a FPGA test system.

Original languageEnglish
Pages (from-to)393-398
Number of pages6
JournalIEEE Transactions on Consumer Electronics
Volume51
Issue number2
DOIs
Publication statusPublished - 2005 May 1

Fingerprint

Local area networks
Orthogonal frequency division multiplexing
Bit error rate
Throughput
Computer hardware description languages
Logic gates
Field programmable gate arrays (FPGA)
Antennas
Networks (circuits)

All Science Journal Classification (ASJC) codes

  • Media Technology
  • Electrical and Electronic Engineering

Cite this

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abstract = "In this paper, we propose an efficient symbol detection algorithm for space-frequency OFDM (SF-OFDM) transmit diversity scheme and present the implementation results of the SF-OFDM wireless LAN (WLAN) baseband processor with the proposed algorithm. When the number of sub-carriers in SF-OFDM scheme is small, the interference between adjacent sub-carriers is generated. The proposed algorithm eliminates this interference in a parallel manner and obtains a considerable performance improvement over the conventional detection algorithm. The bit error rate (BER) performance of the proposed detection algorithm is evaluated by the simulation. In the case of 2 transmit and 2 receive antennas, at BER=10-4 the proposed algorithm obtains about 3 dB gain over the conventional detection algorithm. The packet error rate (PER), link throughput, and coverage performance of the SF-OFDM WLAN with the proposed detection algorithm are also estimated. For the target throughput at 80{\%} of the peak data rate, the SF-OFDM WLAN achieves the average SNR gain of about 5.95 dB and the average coverage gain of 3.98 meter. The SF-OFDM WLAN baseband processor with the proposed algorithm was designed in a hardware description language and synthesized to gate-level circuits using 0.18μm 1.8V CMOS standard cell library. With the division-free architecture, the total logic gate count for the processor is 945K. The real-time operation is verified and evaluated using a FPGA test system.",
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Implementation of wireless LAN baseband processor based on space-frequency OFDM transmit diversity scheme. / Jung, Yunho; Noh, Seungpyo; Yoon, Hongil; Kim, Jaeseok.

In: IEEE Transactions on Consumer Electronics, Vol. 51, No. 2, 01.05.2005, p. 393-398.

Research output: Contribution to journalArticle

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